bpo-43935: Fix typo in Turtle.back() docstring (GH-25581)

tarjeiba · web-flow · commit 0048c60f01de · 2021-04-30T18:05:45.000-04:00
'e ,' to 'e, '.
diff --git a/Lib/turtle.py b/Lib/turtle.py
@@ -1645,7 +1645,7 @@ def back(self, distance):
         Argument:
         distance -- a number
 
-        Move the turtle backward by distance ,opposite to the direction the
+        Move the turtle backward by distance, opposite to the direction the
         turtle is headed. Do not change the turtle's heading.
 
         Example (for a Turtle instance named turtle):
